Fundamental Studies on Exhaust Gas Evaluation Techniques forAgricultural Tractors Engaged in Rotary Tillage Work (Part 2) ——Method and Accuracy of Modeling Engine Torque Using a Dynamometer——

Abstract

We studied methods of evaluating tractor gas exhaust while engaged in rotary tillage, a common agricultural task in Japan. In this report, we investigated the accuracy of modeling engine torque during rotary tillage in the field by applying loads to the PTO shaft of a tractor using a dynamometer. It initially proved difficult to model loaded engine torque accurately, since there is variability in the reproducibility of engine torque due to differences in engines, tractors, the dynamometer, etc. However, we were able to successfully model the loading method by sorting and applying the system torque components in stepwise fashion.